"It’s difficult!" Emperor Chongzhen said, shaking his head.
"The main reason the Jiannu have been able to enter Shanhai Pass repeatedly and withdraw unscathed is their keen observation of the terrain. The Central Plains are vast and open; there is simply no way to stop their cavalry."
Huang Degong set down his wine jar and fell silent. If the Jiannu’s combat effectiveness were even slightly weaker, they would never have been able to drive the Ming Army back inside Shanhai Pass.
Chapter 168